Created attachment 195039 [details]
unvisible text with a deleted font selected (yes it's magic!!!)

In the example, font gentium basic was deleted while writer was still using it.
The deletion blocked a while the writer, then after a while, the writer continued to work normally, exception of the list of fonts!
In the font directory, gentium basic was deleted correctly.
In the writer, gentium basic is still in the list.
When I open a new document, I see the focus with the end of line character.
If I select gentium basic, the font is selected, the focus disappears, it is unpossible to write anything, or exactly, any text you write is invisible!!!
if I change the font, then all the text appears.
Please, fix the font list, it should be able to repair itself instead of working so badly.
Thanks a lot!
Same problem in other component (calc, etc.)